[427freak]

My understanding is that when the cars were converted at Yenko the 396 was pulled out and the shortblock was swapped with the crate 427 L72. Everything including topend that could be used from the 396 was put back on the 427. This saved money for the dealer and the parts worked. The MV suffix on the 396 was probably an emissions issue. I think there have been several threads outlining both of these issues here before. There are more knowledgable people here than me that can help with the suffix question. We are talking 1968 here only not the factory copo's of 69. Good question.